How to detect the broken core of Teflon insulated wire
Date：2021-11-26
It is known that in generic cabling engineering, twisted pair can be used in many places, such as transmitting signal information, such as industrial control and places with large interference, as well as long-distance transmission. Twisted pair is also widely used in LAN. Therefore, it can be widely used in various occasions, such as low price, space saving, convenient wiring, long transmission distance and strong interference ability. With the development of science and technology, advanced technology and specially designed chips are used in video signal transmission. Twisted pair can be used to transmit high-quality image signals. The following is how we use the advantages of twisted pair transmission of video images.
Advantage 1: instant transmission, instant monitoring.
The twisted pair transmission image signal adopts analog signal technology to ensure the real-time performance of the monitoring system; The control room can monitor the field image in real time.
Advantage 2: convenient wiring and high cable utilization.
A large number of unshielded twisted pairs are laid in the intelligent building. Any pair can transmit one video signal. Because there are four twisted pairs in a level 5 cable, four video images can be transmitted. Any pair of multiple monitoring points can transmit four twisted pairs to enable it to transmit multiple video signals. One pair of twisted pair and the other four pairs transmit video signals. Other equipment can also transmit audio signals, control signals, power supply, etc., so as to ensure the utilization of cables and avoid the trouble of separate wiring of various signals. Reduce the project cost, overcome the disadvantages of difficult coaxial cable wiring and occupying more pipeline resources, and make the types of generic cabling more unified.
Advantage 3: strong anti-interference ability
Twisted pair can effectively suppress common mode interference. Even in the case of strong interference, it can better transmit image signals. For example, elevators and equipment rooms in buildings will have strong interference, and buildings in the city center will also be subject to various interference from various environments. Therefore, the anti-interference performance of twisted pair cable is more advantageous than coaxial cable.
Advantage 4: overall cost reduction
At present, super-5 unshielded cable is widely used in intelligent buildings, and its price is cheaper than coaxial cable. With the large application of super-5 cable in the communication field, the price will be further reduced, so the economy and convenience of using twisted pair will be more prominent.
Advantage 5: high reliability and easy to use
The video signal is transmitted by twisted pair, the front end is connected with a special transmitter, and the control center is connected with a special receiver. The machine has the advantages of low price, convenient use, stable operation and high transmission efficiency.